Rotundus AB in Sweden has developed a spherical robot. By moving an internal mass, the robot run in most terrain at up 20mph.
It can be fitted with cameras, microphones, gas and smoke detectors, heat sensors, etc.
Apparently, the company doesn’t really know what to do with its creature. It was first developed to explore planets, but Rotundus suggests tu use it for automated patrolling of large areas, remote controlled alarm response, scouting of unknown terrain and inspection of fires and gas leaks.